Stress Analysis and Reinforcement Design of Underground Road Branching Section Structure
黄兆亮 HUANG Zhao-liang
（中山市规划设计院有限公司，中山 528400）
（Zhongshan Planning and Design Institute Co.，Ltd.，Zhongshan 528400，China）
摘要：研究地下道路分叉节点段结构整体结构的受力性能及配筋设计，针对顺德区环湖路地下回旋通道分叉节点段，利用ABAQUS 有限元计算软件建立分叉节点段三维精细化分析模型，重点计算结构顶板、底板、侧墙局部受力最大区域。利用“拉应力法”对顶板、底板、侧墙进行配筋设计，并与二维框架计算模型进行对比分析。结果表明，按二维框架模型计算配筋设计偏大，甚至受力钢筋位置会出现错误。本文计算结果对类似地下道路分叉结构配筋设计具有一定参考价值。
Abstract: This paper studies the stress performance and reinforcement design of the overall structure of the underground road fork node section structure. Regarding the branching node section of the underground roundabout on Huanhu Road in Shunde District, a three-dimensional refined analysis model of the branching node section was established by using the ABAQUS finite element calculation software, so as to calculate the maximum local stress areas on the top plate, bottom plate, and side walls of the structure. This paper uses the "tensile stress method" to design the reinforcement for the top plate, bottom plate, and side walls, and compares and analyzes them with a two-dimensional frame calculation model. The results indicate that the reinforcement design calculated based on the two-dimensional framework model is large relatively, and even the position of the stressed steel bars may be incorrect. The calculation results in this paper have certain reference value for the reinforcement design of the similar underground road branching structures.
关键词：拉应力域法；地下道路分叉段；数值模拟；空间效应；配筋
Key words: tensile stress domain method；underground road branching section；numerical simulation；spatial effect；reinforcement
中图分类号：[TU997] 文献标识码：A 文章编号：1006-4311（2024）28-049-03 doi:10.3969/j.issn.1006-4311.2024.28.015
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